Beatrixpark, designed by JHK Architecten, was developed for rental purposes by Siemens Onroerend Goed in the late 1990s and delivered in 2001. The entire complex is located in the continuation of the green zone north-west of the The Hague-Leiden railway line, near Laan van Nieuw Oost Indië railway station, and comprises three phases. The design consists of three slabs connected to each other by two transverse volumes, thus creating two inner gardens. At the request of the user, the Rijksgebouwendient (Government Buildings Agency), a new arrangement to cater for government office facilities has been designed for phases 1 and 2. The interior of phase 3, the Ministry of Social Affairs and Employment, was designed at an earlier stage, also by JHK Architecten.
Different government departments, alternating regularly, will be housed in the building. This means simultaneous use by various departments as well as always-changing users, depending on housing requirements. So the building needs to provide a high degree of flexibility. The design of all the office levels is identical, which maintains the unity of the building, and on the façade side there are areas for groups as well as closed office spaces. The zone in the middle is used for interview rooms and as a place to meet others. Each building section is recognizable by means of a coloured strip in the carpet and wall units. The service units with pantry and printer in the cores are meeting places. All the general facilities are situated on the ground floor and are accessible for visitors. The main entrance leads into a high light atrium that links two building parts. The restaurant is divided up into two different settings. The business restaurant is located on the atrium, while the lounge restaurant, which is also eminently suitable for informal get-togethers, is situated in one of the transverse volumes on the patio. The other building parts on the ground floor are arranged for both formal and informal meetings.